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-rw-r--r--src/test/encoding.cc541
1 files changed, 541 insertions, 0 deletions
diff --git a/src/test/encoding.cc b/src/test/encoding.cc
new file mode 100644
index 000000000..f18901cbd
--- /dev/null
+++ b/src/test/encoding.cc
@@ -0,0 +1,541 @@
+#include "include/buffer.h"
+#include "include/encoding.h"
+
+#include "gtest/gtest.h"
+
+using namespace std;
+
+template < typename T >
+static void test_encode_and_decode(const T& src)
+{
+ bufferlist bl(1000000);
+ encode(src, bl);
+ T dst;
+ auto i = bl.cbegin();
+ decode(dst, i);
+ ASSERT_EQ(src, dst) << "Encoding roundtrip changed the string: orig=" << src << ", but new=" << dst;
+}
+
+TEST(EncodingRoundTrip, StringSimple) {
+ string my_str("I am the very model of a modern major general");
+ test_encode_and_decode < std::string >(my_str);
+}
+
+TEST(EncodingRoundTrip, StringEmpty) {
+ string my_str("");
+ test_encode_and_decode < std::string >(my_str);
+}
+
+TEST(EncodingRoundTrip, StringNewline) {
+ string my_str("foo bar baz\n");
+ test_encode_and_decode < std::string >(my_str);
+}
+
+template <typename Size, typename T>
+static void test_encode_and_nohead_nohead(Size len, const T& src)
+{
+ bufferlist bl(1000000);
+ encode(len, bl);
+ encode_nohead(src, bl);
+ T dst;
+ auto i = bl.cbegin();
+ decode(len, i);
+ decode_nohead(len, dst, i);
+ ASSERT_EQ(src, dst) << "Encoding roundtrip changed the string: orig=" << src << ", but new=" << dst;
+}
+
+TEST(EncodingRoundTrip, StringNoHead) {
+ const string str("The quick brown fox jumps over the lazy dog");
+ auto size = str.size();
+ test_encode_and_nohead_nohead(static_cast<int>(size), str);
+ test_encode_and_nohead_nohead(static_cast<unsigned>(size), str);
+ test_encode_and_nohead_nohead(static_cast<uint32_t>(size), str);
+ test_encode_and_nohead_nohead(static_cast<__u32>(size), str);
+ test_encode_and_nohead_nohead(static_cast<size_t>(size), str);
+}
+
+TEST(EncodingRoundTrip, BufferListNoHead) {
+ bufferlist bl;
+ bl.append("is this a dagger which i see before me?");
+ auto size = bl.length();
+ test_encode_and_nohead_nohead(static_cast<int>(size), bl);
+ test_encode_and_nohead_nohead(static_cast<unsigned>(size), bl);
+ test_encode_and_nohead_nohead(static_cast<uint32_t>(size), bl);
+ test_encode_and_nohead_nohead(static_cast<__u32>(size), bl);
+ test_encode_and_nohead_nohead(static_cast<size_t>(size), bl);
+}
+
+typedef std::multimap < int, std::string > multimap_t;
+typedef multimap_t::value_type my_val_ty;
+
+namespace std {
+static std::ostream& operator<<(std::ostream& oss, const multimap_t &multimap)
+{
+ for (multimap_t::const_iterator m = multimap.begin();
+ m != multimap.end();
+ ++m)
+ {
+ oss << m->first << "->" << m->second << " ";
+ }
+ return oss;
+}
+}
+
+TEST(EncodingRoundTrip, Multimap) {
+ multimap_t multimap;
+ multimap.insert( my_val_ty(1, "foo") );
+ multimap.insert( my_val_ty(2, "bar") );
+ multimap.insert( my_val_ty(2, "baz") );
+ multimap.insert( my_val_ty(3, "lucky number 3") );
+ multimap.insert( my_val_ty(10000, "large number") );
+
+ test_encode_and_decode < multimap_t >(multimap);
+}
+
+
+
+///////////////////////////////////////////////////////
+// ConstructorCounter
+///////////////////////////////////////////////////////
+template <typename T>
+class ConstructorCounter
+{
+public:
+ ConstructorCounter() : data(0)
+ {
+ default_ctor++;
+ }
+
+ explicit ConstructorCounter(const T& data_)
+ : data(data_)
+ {
+ one_arg_ctor++;
+ }
+
+ ConstructorCounter(const ConstructorCounter &rhs)
+ : data(rhs.data)
+ {
+ copy_ctor++;
+ }
+
+ ConstructorCounter &operator=(const ConstructorCounter &rhs)
+ {
+ data = rhs.data;
+ assigns++;
+ return *this;
+ }
+
+ static void init(void)
+ {
+ default_ctor = 0;
+ one_arg_ctor = 0;
+ copy_ctor = 0;
+ assigns = 0;
+ }
+
+ static int get_default_ctor(void)
+ {
+ return default_ctor;
+ }
+
+ static int get_one_arg_ctor(void)
+ {
+ return one_arg_ctor;
+ }
+
+ static int get_copy_ctor(void)
+ {
+ return copy_ctor;
+ }
+
+ static int get_assigns(void)
+ {
+ return assigns;
+ }
+
+ bool operator<(const ConstructorCounter &rhs) const
+ {
+ return data < rhs.data;
+ }
+
+ bool operator==(const ConstructorCounter &rhs) const
+ {
+ return data == rhs.data;
+ }
+
+ friend void decode(ConstructorCounter &s, bufferlist::const_iterator& p)
+ {
+ decode(s.data, p);
+ }
+
+ friend void encode(const ConstructorCounter &s, bufferlist& p)
+ {
+ encode(s.data, p);
+ }
+
+ friend ostream& operator<<(ostream &oss, const ConstructorCounter &cc)
+ {
+ oss << cc.data;
+ return oss;
+ }
+
+ T data;
+private:
+ static int default_ctor;
+ static int one_arg_ctor;
+ static int copy_ctor;
+ static int assigns;
+};
+
+template class ConstructorCounter <int32_t>;
+template class ConstructorCounter <int16_t>;
+
+typedef ConstructorCounter <int32_t> my_key_t;
+typedef ConstructorCounter <int16_t> my_val_t;
+typedef std::multimap < my_key_t, my_val_t > multimap2_t;
+typedef multimap2_t::value_type val2_ty;
+
+template <class T> int ConstructorCounter<T>::default_ctor = 0;
+template <class T> int ConstructorCounter<T>::one_arg_ctor = 0;
+template <class T> int ConstructorCounter<T>::copy_ctor = 0;
+template <class T> int ConstructorCounter<T>::assigns = 0;
+
+static std::ostream& operator<<(std::ostream& oss, const multimap2_t &multimap)
+{
+ for (multimap2_t::const_iterator m = multimap.begin();
+ m != multimap.end();
+ ++m)
+ {
+ oss << m->first << "->" << m->second << " ";
+ }
+ return oss;
+}
+
+TEST(EncodingRoundTrip, MultimapConstructorCounter) {
+ multimap2_t multimap2;
+ multimap2.insert( val2_ty(my_key_t(1), my_val_t(10)) );
+ multimap2.insert( val2_ty(my_key_t(2), my_val_t(20)) );
+ multimap2.insert( val2_ty(my_key_t(2), my_val_t(30)) );
+ multimap2.insert( val2_ty(my_key_t(3), my_val_t(40)) );
+ multimap2.insert( val2_ty(my_key_t(10000), my_val_t(1)) );
+
+ my_key_t::init();
+ my_val_t::init();
+ test_encode_and_decode < multimap2_t >(multimap2);
+
+ EXPECT_EQ(my_key_t::get_default_ctor(), 5);
+ EXPECT_EQ(my_key_t::get_one_arg_ctor(), 0);
+ EXPECT_EQ(my_key_t::get_copy_ctor(), 5);
+ EXPECT_EQ(my_key_t::get_assigns(), 0);
+
+ EXPECT_EQ(my_val_t::get_default_ctor(), 5);
+ EXPECT_EQ(my_val_t::get_one_arg_ctor(), 0);
+ EXPECT_EQ(my_val_t::get_copy_ctor(), 5);
+ EXPECT_EQ(my_val_t::get_assigns(), 0);
+}
+
+namespace ceph {
+// make sure that the legacy encode/decode methods are selected
+// over the ones defined using templates. the later is likely to
+// be slower, see also the definition of "WRITE_INT_DENC" in
+// include/denc.h
+template<>
+void encode<uint64_t, denc_traits<uint64_t>>(const uint64_t&,
+ bufferlist&,
+ uint64_t f) {
+ static_assert(denc_traits<uint64_t>::supported,
+ "should support new encoder");
+ static_assert(!denc_traits<uint64_t>::featured,
+ "should not be featured");
+ ASSERT_EQ(0UL, f);
+ // make sure the test fails if i get called
+ ASSERT_TRUE(false);
+}
+
+template<>
+void encode<ceph_le64, denc_traits<ceph_le64>>(const ceph_le64&,
+ bufferlist&,
+ uint64_t f) {
+ static_assert(denc_traits<ceph_le64>::supported,
+ "should support new encoder");
+ static_assert(!denc_traits<ceph_le64>::featured,
+ "should not be featured");
+ ASSERT_EQ(0UL, f);
+ // make sure the test fails if i get called
+ ASSERT_TRUE(false);
+}
+}
+
+namespace {
+ // search `underlying_type` in denc.h for supported underlying types
+ enum class Colour : int8_t { R,G,B };
+ ostream& operator<<(ostream& os, Colour c) {
+ switch (c) {
+ case Colour::R:
+ return os << "Colour::R";
+ case Colour::G:
+ return os << "Colour::G";
+ case Colour::B:
+ return os << "Colour::B";
+ default:
+ return os << "Colour::???";
+ }
+ }
+}
+
+TEST(EncodingRoundTrip, Integers) {
+ // int types
+ {
+ uint64_t i = 42;
+ test_encode_and_decode(i);
+ }
+ {
+ int16_t i = 42;
+ test_encode_and_decode(i);
+ }
+ {
+ bool b = true;
+ test_encode_and_decode(b);
+ }
+ {
+ bool b = false;
+ test_encode_and_decode(b);
+ }
+ // raw encoder
+ {
+ ceph_le64 i;
+ i = 42;
+ test_encode_and_decode(i);
+ }
+ // enum
+ {
+ test_encode_and_decode(Colour::R);
+ // this should not build, as the size of unsigned is not the same on
+ // different archs, that's why denc_traits<> intentionally leaves
+ // `int` and `unsigned int` out of supported types.
+ //
+ // enum E { R, G, B };
+ // test_encode_and_decode(R);
+ }
+}
+
+const char* expected_what[] = {
+ "void lame_decoder(int) no longer understand old encoding version 100 < 200: Malformed input",
+ "void lame_decoder(int) decode past end of struct encoding: Malformed input"
+};
+
+void lame_decoder(int which) {
+ switch (which) {
+ case 0:
+ throw buffer::malformed_input(DECODE_ERR_OLDVERSION(__PRETTY_FUNCTION__, 100, 200));
+ case 1:
+ throw buffer::malformed_input(DECODE_ERR_PAST(__PRETTY_FUNCTION__));
+ }
+}
+
+TEST(EncodingException, Macros) {
+ for (unsigned i = 0; i < std::size(expected_what); i++) {
+ try {
+ lame_decoder(i);
+ } catch (const exception& e) {
+ ASSERT_NE(string(e.what()).find(expected_what[i]), string::npos);
+ }
+ }
+}
+
+
+TEST(small_encoding, varint) {
+ uint32_t v[][4] = {
+ /* value, varint bytes, signed varint bytes, signed varint bytes (neg) */
+ {0, 1, 1, 1},
+ {1, 1, 1, 1},
+ {2, 1, 1, 1},
+ {31, 1, 1, 1},
+ {32, 1, 1, 1},
+ {0xff, 2, 2, 2},
+ {0x100, 2, 2, 2},
+ {0xfff, 2, 2, 2},
+ {0x1000, 2, 2, 2},
+ {0x2000, 2, 3, 3},
+ {0x3fff, 2, 3, 3},
+ {0x4000, 3, 3, 3},
+ {0x4001, 3, 3, 3},
+ {0x10001, 3, 3, 3},
+ {0x20001, 3, 3, 3},
+ {0x40001, 3, 3, 3},
+ {0x80001, 3, 3, 3},
+ {0x7f0001, 4, 4, 4},
+ {0xff00001, 4, 5, 5},
+ {0x1ff00001, 5, 5, 5},
+ {0xffff0001, 5, 5, 5},
+ {0xffffffff, 5, 5, 5},
+ {1074790401, 5, 5, 5},
+ {0, 0, 0, 0}
+ };
+ for (unsigned i=0; v[i][1]; ++i) {
+ {
+ bufferlist bl;
+ {
+ auto app = bl.get_contiguous_appender(16, true);
+ denc_varint(v[i][0], app);
+ }
+ cout << std::hex << v[i][0] << "\t" << v[i][1] << "\t";
+ bl.hexdump(cout, false);
+ cout << std::endl;
+ ASSERT_EQ(bl.length(), v[i][1]);
+ uint32_t u;
+ auto p = bl.begin().get_current_ptr().cbegin();
+ denc_varint(u, p);
+ ASSERT_EQ(v[i][0], u);
+ }
+ {
+ bufferlist bl;
+ {
+ auto app = bl.get_contiguous_appender(16, true);
+ denc_signed_varint(v[i][0], app);
+ }
+ cout << std::hex << v[i][0] << "\t" << v[i][2] << "\t";
+ bl.hexdump(cout, false);
+ cout << std::endl;
+ ASSERT_EQ(bl.length(), v[i][2]);
+ int32_t u;
+ auto p = bl.begin().get_current_ptr().cbegin();
+ denc_signed_varint(u, p);
+ ASSERT_EQ((int32_t)v[i][0], u);
+ }
+ {
+ bufferlist bl;
+ int64_t x = -(int64_t)v[i][0];
+ {
+ auto app = bl.get_contiguous_appender(16, true);
+ denc_signed_varint(x, app);
+ }
+ cout << std::dec << x << std::hex << "\t" << v[i][3] << "\t";
+ bl.hexdump(cout, false);
+ cout << std::endl;
+ ASSERT_EQ(bl.length(), v[i][3]);
+ int64_t u;
+ auto p = bl.begin().get_current_ptr().cbegin();
+ denc_signed_varint(u, p);
+ ASSERT_EQ(x, u);
+ }
+ }
+}
+
+TEST(small_encoding, varint_lowz) {
+ uint32_t v[][4] = {
+ /* value, bytes encoded */
+ {0, 1, 1, 1},
+ {1, 1, 1, 1},
+ {2, 1, 1, 1},
+ {15, 1, 1, 1},
+ {16, 1, 1, 1},
+ {31, 1, 2, 2},
+ {63, 2, 2, 2},
+ {64, 1, 1, 1},
+ {0xff, 2, 2, 2},
+ {0x100, 1, 1, 1},
+ {0x7ff, 2, 2, 2},
+ {0xfff, 2, 3, 3},
+ {0x1000, 1, 1, 1},
+ {0x4000, 1, 1, 1},
+ {0x8000, 1, 1, 1},
+ {0x10000, 1, 2, 2},
+ {0x20000, 2, 2, 2},
+ {0x40000, 2, 2, 2},
+ {0x80000, 2, 2, 2},
+ {0x7f0000, 2, 2, 2},
+ {0xffff0000, 4, 4, 4},
+ {0xffffffff, 5, 5, 5},
+ {0x41000000, 3, 4, 4},
+ {0, 0, 0, 0}
+ };
+ for (unsigned i=0; v[i][1]; ++i) {
+ {
+ bufferlist bl;
+ {
+ auto app = bl.get_contiguous_appender(16, true);
+ denc_varint_lowz(v[i][0], app);
+ }
+ cout << std::hex << v[i][0] << "\t" << v[i][1] << "\t";
+ bl.hexdump(cout, false);
+ cout << std::endl;
+ ASSERT_EQ(bl.length(), v[i][1]);
+ uint32_t u;
+ auto p = bl.begin().get_current_ptr().cbegin();
+ denc_varint_lowz(u, p);
+ ASSERT_EQ(v[i][0], u);
+ }
+ {
+ bufferlist bl;
+ int64_t x = v[i][0];
+ {
+ auto app = bl.get_contiguous_appender(16, true);
+ denc_signed_varint_lowz(x, app);
+ }
+ cout << std::hex << x << "\t" << v[i][1] << "\t";
+ bl.hexdump(cout, false);
+ cout << std::endl;
+ ASSERT_EQ(bl.length(), v[i][2]);
+ int64_t u;
+ auto p = bl.begin().get_current_ptr().cbegin();
+ denc_signed_varint_lowz(u, p);
+ ASSERT_EQ(x, u);
+ }
+ {
+ bufferlist bl;
+ int64_t x = -(int64_t)v[i][0];
+ {
+ auto app = bl.get_contiguous_appender(16, true);
+ denc_signed_varint_lowz(x, app);
+ }
+ cout << std::dec << x << "\t" << v[i][1] << "\t";
+ bl.hexdump(cout, false);
+ cout << std::endl;
+ ASSERT_EQ(bl.length(), v[i][3]);
+ int64_t u;
+ auto p = bl.begin().get_current_ptr().cbegin();
+ denc_signed_varint_lowz(u, p);
+ ASSERT_EQ(x, u);
+ }
+ }
+}
+
+TEST(small_encoding, lba) {
+ uint64_t v[][2] = {
+ /* value, bytes encoded */
+ {0, 4},
+ {1, 4},
+ {0xff, 4},
+ {0x10000, 4},
+ {0x7f0000, 4},
+ {0xffff0000, 4},
+ {0x0fffffff, 4},
+ {0x1fffffff, 5},
+ {0xffffffff, 5},
+ {0x3fffffff000, 4},
+ {0x7fffffff000, 5},
+ {0x1fffffff0000, 4},
+ {0x3fffffff0000, 5},
+ {0xfffffff00000, 4},
+ {0x1fffffff00000, 5},
+ {0x41000000, 4},
+ {0, 0}
+ };
+ for (unsigned i=0; v[i][1]; ++i) {
+ bufferlist bl;
+ {
+ auto app = bl.get_contiguous_appender(16, true);
+ denc_lba(v[i][0], app);
+ }
+ cout << std::hex << v[i][0] << "\t" << v[i][1] << "\t";
+ bl.hexdump(cout, false);
+ cout << std::endl;
+ ASSERT_EQ(bl.length(), v[i][1]);
+ uint64_t u;
+ auto p = bl.begin().get_current_ptr().cbegin();
+ denc_lba(u, p);
+ ASSERT_EQ(v[i][0], u);
+ }
+
+}
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